Clutch



Sept. 27, 1927. 1,643,543

J. E. CRADDICK CLUTCH Original Filed Mau/Q21. 1923 l Patented Sept. 27, 1927.

UNITEDSTATES PATENT OFFICE.

JOEL n. GBADDICK, or Los ANGELES, CALIFORNIA.

CLUTCH.

Original application filed May 21, 1923, Serial No. 640,522. Divided and this application filed December i 14, '1925. Serial No. 75,390.

This application is a division of my parent U. S. application Serial No. 640,522,

y filed May 21, 1.923, on improvements in wave motors Vwhich application has matured into Patent No. 1,597,145, of VAugust 24, 1926. The present application relates solely to new and improved construction for an intermittent grip device 'or clutch whose principal us-e is for converting oscillatory movement to rotary movement, the object being to provide a simple and inexpensive, yet an efficient and reliable construction and arrangement of parts for producing this re sult.

N ith the foregoing in view, the invention resides in the novel subject matter hereinafter described and claimed, the description being supplemented by the accompanying drawing.

Figure 1 is a vertical transverse sectional view through an intermittent grip device constructed in accordance with this invention.

Figure 2 is a side elevation partly in vertical section on the plane of line 2-2 of Fig. 1, and this view also indicates by the line 1-1, the plane on which Fig. 1 is cut.

Figure 3 isa complete longitudinal sectional view cut substantially on the plane of line 2-2 of Fig. 1.

At 2, a shaft is illustrated, said shaft having a rigidly attached wheel 5 to be driven by oscillation of apair of drums 6, intermediate driving connections being employed between said drums and wheel for turning the latter in on-e direction when either drum turns correspondingly, and for permitting return movement of the drum in the other direction. Cables 7 are shown wound upon the drums 6 for oscillating them, and it may be considered that these cables may be connected with any desired operating means, such as that shown in the parent application above referred to.

A pair of shoe-carriers 20 are mounted loosely upon thev shaft 2 between the drums 6 anda central web 5u of the wheel 5, said carriers being free to float to some extent.A

rIhese carriers have appropriate radial guides 22 in which shanks 23 of inner and outer friction shoes 24 and 25 are slidably mounted, said shoes being adapted to frictionally grip laterally extending circumferential flanges 26 with which the wheel 5 is provided. Push-links 27 are pivoted to the shanks 23 of the inner shoes 24 and pulllinks 28 are similarly pivoted to the Shanks of the outer shoes 25,' all of these links being pivoted to the inner ends of the drums 6 at eccentric points as indicated at 29 in Fig. 2.

By the arrangement described, when either drum 6 is rotated in one direction, the push-links 27 and the pull-links 28 act upon the shanks 23 so that the shoes 24 and 25 are brought into gripping contact with the wheel flange, thus establishing a driving connection between the moving drum and the wheel, to turn the latter by means of the former. When either drum moves in the reverse direction, the linkage automatically releases the shoes from engagement with the wheel fiange. Thus, by means of oscillatory motion on the part of the drums 6, the wheel 5 is rotated in a single direction.

The details disclosed are preferably followed, but within the scope of the invention as claimed variations may be made.A

1. A clutch comprising a shaft, a clutch wheel on said shaft having a circumferential laterally extending flange, -a floating shoecarrier rotatably mounted on the shaft near the wheel, inner and outer shoes on said carrier for engagement with the inner and outer sides of said flange, and links connected to said shoes for applying and re leasing the latter, said links being adapted for connection to an extraneous operating member.

2. A clutch comprising a shaft, a clutch wheel on said shaft, a driving pulley on said shaft, independent clutch shoes bearing on opposite faces of the periphery of said wheel and provided ble shoe carrier loosely mounted on said shaft, radial guides extending from said carrier in which said shoe Shanks are mounted to slide, and a connection between said shanks and driving pulley whereby a driving connection between said p-ulley and wheel is established.

3. A clutch comprising a shaft, a clutch wheel ron said shaft, a driving pulley on said shaft, independent clutch shoes bearing on opposite faces of the periphery of said wheel and provided with Shanks, a rotatable shoe carrier loosely mounted on .said shaft, radial guides extending from said carrier in which said shoe Shanks are mountwith shanks, a rotatalUU ed to slide, and push and pull links pivoted respectively to the inner and outer shoes and to said pulley whereby When the pulley is rotated in one direction, the shoes Will be brought into gripping engagement with the' Wheel and when moved in the reverse direction, said Wheel will be released.

4l. A. clutch comprising a shaft, a clutch Wheel on said shaft, a driving` pulley on said Sha-ft, independent clutch shoes bearing on opposite faces of the periphery of said Wheel and provided With shanks, a rotatable shoe carrier loosely inounted on said shaft, radial guides extending` from said carrier in which said shoe Shanks are mounted to slide, and push links pivoted to the Shanks of the inner .shoes and pull links pivoted to the Shanks of the outer shoes, all of said links being pivoted to said pulley at eccentric points, whereby a driving connection between the pulley and Wheel is established.

In testimony whereof I have hereunto afixed niy signature.

JOEL E. CRADDICK. 

